Purpose: To investigate the impact of distance from most-anterior surface optic to principal object plane (POP) and foremost haptic (H-POP) on intraocular lens (IOL) power calculation. Setting: A tertiary hospital. Design: Optical simulation retrospective cross-sectional study. Methods: The optical study plotted changes in POP H-POP as a function IOL using ICB00 configuration data. clinical included 102 eyes patients implanted with examine correlation between both H-POP, prediction error...

Watching three-dimensional (3D) images is known to induce ocular and non-ocular symptoms, such as eye discomfort, fatigue, headache, nausea, which can be referred "3D asthenopia". This study investigated ophthalmic factors associated with 3D asthenopia.One hundred fifteen volunteers, aged 18 55 years, were enrolled in this study. shown all volunteers high-definition television for 90 minutes. Subjects who felt eyestrain assigned the asthenopia group (14 subjects) subjects without symptoms...

This letter proposes a multiple-mode Kalman filter for one-dimensional attitude estimation using low-cost accelerometer and gyroscope. The nonlinearity time-varying parameters are partitioned into several modes; each mode, linear time-invariant is selected. Experimental results given to verify the proposed

To assess the correlation between central corneal thickness (CCT) and anterior scleral (AST) in Korean patients with normal tension glaucoma (NTG) primary open angle (POAG).Consecutive POAG, NTG, individuals were recruited. Anterior segment optical coherence tomography (AS-OCT, Visante) was used to measure CCT AST. The AST measured 2 mm posterior spur temporal meridian. Statistical analysis of data included ANOVA Pearson analysis.One hundred eight participants (36 35 37 individuals)...

Purpose: To evaluate the accuracy of IOL power calculation using adjusted corneal according to posterior/anterior curvature radii ratio. Methods: Nine hundred twenty-eight eyes from 928 reference subjects and 158 cataract patients who underwent phacoemulsification surgery were enrolled. Adjusted was calculated fictitious refractive index that obtained geometric mean ratio anterior predicted posterior conventional keratometry (K) The median absolute error (MedAE) based on compared with K in...

Purpose: To report the incidence and factors of consecutive esotropia (ET) in patients with immediate postoperative overcorrection at least 17 prism diopters (PD) after surgery for intermittent exotropia (X(T)).Methods: Four-hundred-five under age 18 were included this study.They underwent bilateral lateral rectus recession (LROU-rec) or unilateral recession-resection (R&R) X(T).On day one, PD classified as group 1 those less than 2. Age, refractive error, type surgery, incomitancy, ET...

To investigate the clinical effects of head-mounted display on refractive error and oculomotor system in normal adolescents.Sixty volunteers (age: 13 to 18 years) watched a three-dimensional movie virtual reality application for 30 minutes. The (diopters [D]), angle deviation (prism diopters [PD]) at distance (6 m) near (33 cm), point accommodation, stereoacuity were measured before, immediately after, 10 minutes after watching display. was presented as spherical equivalent (SE). Refractive...

가천의과학대학교 안과학교실 3 목적: 눈 피로를 객관적으로 평가할 수 있는 방법에 대해 알아보고자 한다.대상과 방법: 건강한 성인 15명을 대상으로 정해진 컴퓨터 작업을 1시간 시행하여 유발한 후 설문조사로 작업 전후 주관적인

To estimate the factors and prevalence of eye care service utilization in South Korean population.This cross-sectional, population-based study included data from 22,550 Koreans aged ≥5 years who participated Korea National Health Nutrition Examination Survey 2010 to 2012. For people 5 11 (young children), information was based on self-reports contact with past year; for ≥12 (older population), self-reported lifetime service. Univariate multivariate logistic regression analyses complex sample...

To investigate the accommodative loads change needed to maintain binocular fusion in patients with intermittent exotropia (IXT). Seventeen consecutive basic IXT and 15 normal controls were recruited. The WAM-5500 autorefractor (GrandSeiko, Fukuyama, Japan) was used measure refractive error (D) under monocular viewing conditions at 6 m, 50 cm, 33 cm 20 cm. difference between each distance defined load. changes load compared controls. We also investigated according fixing preference IXT. In...

Purpose:To investigate the effect of watching 3-dimensional (3D) television (TV) on refractive error in children.Methods: Sixty healthy volunteers, aged 6 to 12 years, without any ocular abnormalities other than were recruited for this study.They watched 3D TV 50 minutes at a viewing distance 2.8 meters.The image disparity contents was from -1 1 degree.Refractive errors measured both before and immediately after rechecked 10-minute rest period.The compared.The amount change also compared...

Implantable medical devices (IMD) with stimulation system-on-chip (SoC) have been essential techniques for disease treatments and rehabilitations. As neuromuscular injects a large amount of stimulus energy into the body, its efficiency safety should be carefully considered, which otherwise damages cellular tissues. Conventional current suffers from power losses across sources. Even adopting adaptive supply voltage, stimulator is still limited below 60% [1]. The switched capacitor (SCS)...

Purpose: This study was conducted to investigate the asthenopic symptoms in patients with exotropia and esotropia while watching stereoscopic 3D (S3D) television (TV).Methods: A total 77 subjects who more than 9 years of age were enrolled this study. We divided them into three groups; Thirty-four exodeviation (Exo group), 11 esodeviation (Eso group) 32 volunteers normal binocular vision (control group). The S3D images shown all high-definition TV for a period 20 min. Best corrected visual...

Purpose:The purpose of this paper is to investigate how much correction obtained per millimeter medial rectus (MR) resection for recurrent exotropia after bilateral lateral (BLR) recession, and determine the difference in effects between unilateral resection, influence previous (LR) recession on MR resection.Methods: A total 59 patients who had undergone BLR were included study.The group consisted 38 group, 21 patients.Thirty divided into two groups: LR 7 mm or greater (21 patients) less...

A case of acquired Brown syndrome caused by surgical repair medial orbital wall fracture is reported in the present paper. 23-year-old man presented at hospital with right periorbital trauma. Although patient did not complain any diplopia, imaging study revealed a blow-out wall. Surgical calvarial bone autograft was performed department plastic surgery. The referred to ophthalmologic due diplopia that newly developed after prism cover test distant fixation showed hypotropia eye, which 4...

To evaluate the effect of classroom illuminance on development and progression myopia in elementary school children.The daylight factor, a ratio inside outside illuminance, was obtained 50 schools. The firstgrade students with lowest (LD) factor (LD school, 145 subjects; 0.51%) highest (HD) (HD 147 13.35%) were selected. A survey conducted to parental myopia, amount near-work outdoor activities. refractive error axial length (AL) measured at initial after 6 months. spherical equivalent, AL,...

Purpose.: To investigate whether three-dimensional (3D) images cause nearwork-induced transient myopia (NITM) more than 2D and there is any difference between 3D with crossed uncrossed disparities in the development of NITM. Methods.: Twenty-five volunteers, enrolled this study, watched movies read texts for 2 to 3 hours spectacle correction. The viewing distance was 50 70 cm. refractive error measured before after each visual task. If a myopic shift task, at 3-minute intervals until it...

This study was performed to compare the incidence of posterior capsular opacity (PCO) and refractive errors between hydrophilic (ACR6D, Corneal) hydrophobic (MA60BM, AcrySof) acrylic intraocular lenses (IOLs) over a 3-year follow-up after phacoemulsification surgery. The patients with AcrySof implanted in one eye Corneal other were categorized as Group 1 (n=28), while those or both eyes IOLs same kind 2 (AcrySof, n=90; Corneal, n=95). Refractive evaluated at 3 months years postoperatively....

삼차원(3D) 영상 시청이 눈 피로에 미치는 영향가천의과대학교 안과학교실 2 목적: 이차원 및 삼차원 영상물 시청 전, 후 눈의 피로도와 눈물막 파괴시간, 안구표면 온도변화 등을 통한 안구표면의 변화를 객관적 으로 비교해보고자 하였다.대상과 방법: 2D 3D 후로 피로도 이외의 증상, 최초로 확연히 피로를 느끼는 시간, 중 측정한 피로도에 대해서 비교하였다.구면렌즈대응치, 결막충혈도, 파괴시간 온도의 변화에 대해서도 비교하였다

Background: To investigate the influence of nocturnal ambient light on visual function and ocular fatigue.Methods: Sixty healthy subjects (30 men 30 women) aged 19 through 29 years with no history disease were recruited.All spent 3 consecutive nights in sleep laboratory.During first second nights, not exposed to during sleep, but third night, they light, measuring 5 or 10 lux at eye level, which was randomly allocated each.The fatigue assessed 7 a.m. 3rd 4th mornings, using best-corrected...

Background: Signal Transducer and Activator of Transcription 3 (STAT3) gain-of-function germline mutations are associated with diverse clinical manifestations, including autoimmune cytopenia, lymphadenopathy, immunodeficiency, endocrinopathy, enteropathy. We describe a new feature: raised intracranial pressure papilledema.Materials Methods: Report two cases.Results: The first patient had de novo heterozygous c.2144C>T (p.Pro715Leu) mutation in the STAT3 gene. At age 1 she papilledema marked...